Group your games (e.g., RPG, Racing, Action) to make finding codes faster.

If you want an authentic experience, physical "Code Books" from the early 2000s are frequently available for purchase. How to Write a Useful Game Paper/Guide

If you are looking to "download" code books (historically sold as physical guides like Action Replay or GameShark ), your best options are:

If you are using cheat devices like Action Replay , always list the "Master Code" (M) at the top, as the other cheats won't work without it.

Note if the code is for the NTSC (US), PAL (Europe), or NTSC-J (Japan) version of the game, as they are often different.

If your goal is to "write a useful paper" or your own DIY code book, follow these steps to make it practical and easy to use:

Leave space for "Player Notes" where you can jot down specific level strategies or item locations. DIY Options

A great resource for digitized copies of vintage gaming magazines and complete PS2 manual collections that often include secret codes.